Meat Man was a character that was mentioned many times by Jake in "Hitman." Very little is known about him and what he looks like except that he is most likely made entirely out of meat, and that he likely has the ability to donate meat from his body for Finn and Jake to eat. Finn was wondering if taking his meat hurts him when they were making sandwiches that had his meat in it, but Jake says that he doesn't know since he can't read his mind. Later in the episode, Jake was talking in his sleep while he was dreaming and mentioned Lady Rainicorn and Meat Man. He said "Meat Man. I'm sorry Meat Man. I didn't mean it man," which most likely means he has grown repentant of eating Meat Man's meat.